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Table 5 Distribution of participants and positive serological results by category, for sociodemographic and knowledge, perceptions, and practices variables

From: Prevalence of asymptomatic Leishmania infection and knowledge, perceptions, and practices in blood donors in mainland Portugal

Variables

Categories

Samples, % (n)

Seropositive donors, % (n)

P-value

Sex

Male

49.8 (1822/3655)

7.1 (129/1822)

 < 0.001* (χ2  = 17.5, df = 1)

Female

50.2 (1833/3665)

3.9 (72/1833)

Age (years)

18–25

14.4 (513/3567)

3.3 (17/513)

0.127 (χ2  = 7.1, df = 4)

26–35

20.6 (734/3567)

5.6 (41/734)

36–45

30.2 (1077/3567)

5.8 (62/1077)

46–55

24.6 (876/3567)

6.6 (58/876)

56–65

10.3 (367/3567)

6.3 (23/367)

Level of education a

1–4

1.9 (68/3565)

10.3 (7/68)

0.258 (FET = 5.3)

5–9

16.8 (598/3565)

5.7 (34/598)

10–12

44.0 (1570/3565)

5.4 (85/1570)

Bachelor's

25.8 (920/3565)

5.9 (54/920)

MSc/PhD

11.5 (409/3565)

3.9 (16/409)

Occupationb

Student

9.6 (279/2906)

3.2 (9/279)

 

Retired

1.9 (56/2906)

7.1 (4/56)

 

Unemployed

3.4 (100/2906)

8.0 (8/100)

 

0

1.9 (56/2906)

8.9 (5/56)

0.173 (χ2  = 4.4, df = 3)

1–3

39.4 (1144/2906)

5.2 (60/1144)

4–5

25.7 (747/2906)

4.8 (36/747)

6–9

18.0 (524/2906)

7.1 (37/524)

Travel abroad to endemic country c (< 2 years previously)

Yes

58.6 (439/749

5.2 (23/439)

0.739 (χ2  = 0.11, df = 1)

No

41.4 (310/749)

5.8 (18/310)

Type of parish of residence

Non-rural

58.3 (2133/3661)

5.5 (118/2133)

0.903 (χ2  = 0.02, df = 1)

Rural

41.7 (1528/3661)

5.4 (83/1528)

Had heard of leishmaniasis

Yes

72.4 (2638/3643)

4.9 (130/2638)

0.037* (χ2  = 4.3, df = 1)

No/DK/CR

27.6 (1005/3643)

6.7 (67/1005)

Animals affected by leishmaniasis nearby

Yes

11.7 (235/2017)

4.7 (11/235)

0.878 (χ2  = 0.02, df = 1)

No/DK/CR

88.3 (1782/2017)

4.9 (87/1782)

Regular contact with domestic animals

Yes

70.5 (2457/3486)

5.2 (127/2457)

0.419 (χ2  = 0.63, df = 1)

No

29.5 (1029/3486)

5.8 (60/1029)

Regular contact with wild animals

Yes

4.2 (139/3301)

2.9 (4/139)

0.180 (χ2  = 1.7, df = 1)

No

95.8 (3162/3301)

5.4 (172/3162)

Practice of outdoor activities during nighttime

Yes

24.1 (801/3321)

5.4 (43/801)

0.921 (χ2  = 0.01, df = 1)

No

75.9 (2520/3321)

5.4 (137/2520)

Use of nets in windows/doors

Yes (all/some)

23.8 (830/3481)

4.3 (36/830)

0.138 (χ2  = 2.2, df = 1)

None

76.2 (2651/3481)

5.7 (150/2651)

Ownership of dog(s)

Yes

48.1 (1727/3590)

5.5 (95/1727)

0.937 (χ2  = 0.01, df = 1)

No

51.9 (1863/3590)

5.4 (101/1863)

K score

 ≤ 7

50.7 (1858/3664)

6.4 (118/1858)

0.012* (χ2  = 6.2, df = 1)

 > 7

49.3 (1806/3664)

4.5 (81/1806)

Per score

 < 1

59.7 (2186/3664)

6.3 (137/2186)

0.006* (χ2  = 7.4, df = 1)

 ≥ 1

40.3 (1478/3664)

4.2 (62/1478)

Pra score

 ≤ 3,5

52.0 (1901/3664)

5.5 (104/1901)

0.937 (χ2  = 0.01, df = 1)

 > 3,5

48.0 (1763/3664)

5.4 (95/1763)

  1. K knowledge, Per perceptions, Pra practices, MSc Master of Science, PhD Doctor of Philosophy, DK/CR don't know/can't remember
  2. *Statistically significant
  3. aCategories refer to number of years completed of formal school education
  4. bCategory numbers refer to the numbers of the categories in the classification of European skills, competences, and occupations
  5. cAlbania, Brazil, Bulgaria, Cyprus, Eritrea, Ethiopia, Greece, India, Italy, Kenya, Malta, Nepal, Somalia, South Sudan, Spain, Sudan, Yemen